<!DOCTYPE html>
     <html lang="en">
    <head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initi
 al-scale=1.0">
    <title>this绑定规则实验</title>
 </head>
 <body>
    <script>
        function foo() {
 console.log("foo:", this);
 }
 foo()

 var obj = {
 name: "gkd",
 bar: function() {
 console.log("bar:", this);
 }
 };
 var baz = obj.bar;
 baz();

 function test(fn) {
 fn();
 }
 test(obj.bar);

 "use strict";
 function foo() {
 console.log("foo (strict):", this);
 }
 foo();
    </script>
</body>
</html>